TMapTMap implements an associative array of (key,value) pairs using a
THashTable for efficient retrieval (therefore TMap does not conserve
the order of the entries). The hash value is calculated
using the value returned by the keys Hash() function. Both key and
value need to inherit from TObject.
/*
*/

Check if a (key,value) pair exists with keyname as name of the key.
Returns a TAssoc* (need to downcast from TObject). Use Key() and
Value() to get the pointers to the key and value, respectively.
Returns 0 if not found.

Check if a (key,value) pair exists with key as key.
Returns a TAssoc* (need to downcast from TObject). Use Key() and
Value() to get the pointers to the key and value, respectively.
Returns 0 if not found.

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